*{
    margin: 0;
    padding: 0;
  }
  /* 控制弹出框的样式 */
  .MaskMessage{
    position: absolute;
    z-index: 200;
    padding: 20px;
    transition: all .5s;
    background-color: rgba(0,0,0,0.7);
    color: #fff;
    font-size: 18px;
    border-radius: 10px;

  }
  /* 控制帧率的样式 */
  .cesium-performanceDisplay-defaultContainer{
    top: 10%;
    right: 22%;
  }
  .cesium-performanceDisplay{
    background-color: rgb(48,114,195,0.44);
  }